CVE-2026-43756 Information disclosure in macOS

Medium 5.5 Published 27 Jul 2026 Updated 28 Jul 2026

An app can access user-sensitive data due to a logic issue, requiring an OS update to fix.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-43756?

CVE-2026-43756 is a medium-severity vulnerability in Apple Macos, published on 27 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A logic issue was addressed with improved validation. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to access user-sensitive data.

Weakness: CWE-285, CWE-200

Which versions are affected by CVE-2026-43756?

It affects 1 product.

Products include Apple Macos.

How do I fix CVE-2026-43756?

No fix has been published for CVE-2026-43756 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-43756 being exploited?

There is no known exploitation of CVE-2026-43756 in the wild and no public exploit code.

All Apple Macos vulnerabilities

Sources

Also known as GHSA-gfmx-gfcv-fq6c.